Global Patent Index - EP 2679701 A4

EP 2679701 A4 20151028 - NITRIDED STEEL MEMBER AND METHOD FOR PRODUCING SAME

Title (en)

NITRIDED STEEL MEMBER AND METHOD FOR PRODUCING SAME

Title (de)

NITRIERTES STAHLELEMENT UND VERFAHREN ZU SEINER HERSTELLUNG

Title (fr)

ÉLÉMENT EN ACIER NITRURÉ ET SON PROCÉDÉ DE PRODUCTION

Publication

EP 2679701 A4 (EN)

Application

EP 12750227 A

Priority

  • JP 2011037032 A
  • JP 2012054241 W

Abstract (en)

[origin: EP2679701A1] The present invention provides a nitrided steel member and manufacturing method thereof. the nitrided steel member including: an iron nitride compound layer formed on a surface of a steel member made of carbon steel for machine structural use or alloy steel for machine structural use, in which with regard to X-ray diffraction peak intensity IFe 4 N (111) of the (111) crystal plane of Fe 4 N and X-ray diffraction peak intensity IFe 3 N (111) of the (111) crystal plane of Fe 3 N obtained by measuring a surface of the nitrided steel member by X-ray diffraction, an intensity ratio represented by IFe 4 N(111)/{IFe 4 N (111) + IFe 3 N (111) is 0.5 or more, and a thickness of the iron nitride compound layer is 2 to 17 µm.

IPC 8 full level

C23C 8/26 (2006.01); C21D 1/06 (2006.01); C21D 1/76 (2006.01); C21D 9/32 (2006.01)

CPC (source: EP US)

C21D 1/06 (2013.01 - EP US); C21D 1/74 (2013.01 - EP US); C21D 1/76 (2013.01 - EP US); C21D 9/32 (2013.01 - EP US); C22C 38/002 (2013.01 - EP US); C22C 38/02 (2013.01 - EP US); C22C 38/04 (2013.01 - EP US); C22C 38/06 (2013.01 - EP US); C22C 38/22 (2013.01 - EP US); C22C 38/44 (2013.01 - EP US); C23C 8/26 (2013.01 - EP US); C21D 2201/05 (2013.01 - EP US); C21D 2221/00 (2013.01 - EP US)

Citation (search report)

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DOCDB simple family (publication)

EP 2679701 A1 20140101; EP 2679701 A4 20151028; EP 2679701 B1 20170712; CN 103403212 A 20131120; CN 103403212 B 20150826; JP 2017036509 A 20170216; JP 6212190 B2 20171011; JP WO2012115135 A1 20140707; US 2013333808 A1 20131219; US 2017152591 A1 20170601; US 9598760 B2 20170321; US 9988704 B2 20180605; WO 2012115135 A1 20120830

DOCDB simple family (application)

EP 12750227 A 20120222; CN 201280010911 A 20120222; JP 2012054241 W 20120222; JP 2013501086 A 20120222; JP 2016188525 A 20160927; US 201214001444 A 20120222; US 201715429819 A 20170210